Why do crows attack?

I was running along Vancouver’s Kitsilano Beach on a glorious summer day when it happened: something angry, feathered, and fast swooped down from behind me, mere millimetres from my head.
“Caw, caw!” cawed the crow, landing on a bench, challenging me with its beady eyes.
“What the f**k,” I shouted, shocked. I had been dive-bombed by a crow for the first time in my life, and I was not pleased. Read more…